What transformation is represented by the rule (x, y)→(y, − x) ? reflection across the x-axis reflection across the y-axis rotation of 90° clockwise about the origin rotation of 180° about the origin what transformation transforms (p, q) to (q, p)? a rotation of 90° about the origin a reflection over the x-axis a reflection over the y-axis a reflection over y = x point (m, n) is transformed by the rule (m−3, n). what type of transformation occurred? a translation of 3 units to the left a translation of 3 units down a translation of 3 units up a translation of 3 units to the right